Josh Coen and Jason Langer have prepared the latest edition of VCP study guide. Both authors have been working in the IT field for more than a decade, and both hold VMware certifications. This 163-page guide covers all 10 of the exam blueprint sections.

First starts 1 scp per processor until list of files is exhausted. it is more like $ cat listoffiles | xargs -P 10 ....
Second starts heap of SCPs in background and waits until done (note the & before done and wait command after)
Rsync transfers 1 file at a time, but never transfers same data twice

If you nfs mount your remote filesystem, you could use cpio, which will be slightly faster for the initial copy than rsync or scp. rsync can be used after you've copied everything and only need to copy the deltas.

To address your question directly:

Why not just run 10 scp with wildcards? Why are you copying 1 file at a time with each SCP command?

The same goes for rsync. You could run 10 separate rsync on different portions of your file system.

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This course (1 of 3) is designed to help students who are interested in Google Cloud Platform (GCP) to become familiar with the platform, navigate the console and learn its capabilities. It will also prepare students for the Google Cloud Architect certification exam.

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